diff options
Diffstat (limited to 'bcm4329/src/shared/linux_osl.c')
| -rw-r--r-- | bcm4329/src/shared/linux_osl.c | 206 |
1 files changed, 205 insertions, 1 deletions
diff --git a/bcm4329/src/shared/linux_osl.c b/bcm4329/src/shared/linux_osl.c index 7fb59e4..4cf658b 100644 --- a/bcm4329/src/shared/linux_osl.c +++ b/bcm4329/src/shared/linux_osl.c @@ -21,7 +21,7 @@ * software in any way with any other Broadcom software provided under a license * other than the GPL, without Broadcom's express prior written consent. * - * $Id: linux_osl.c,v 1.125.12.3.8.2 2009/06/18 02:31:41 Exp $ + * $Id: linux_osl.c,v 1.125.12.3.8.5 2009/10/27 04:43:04 Exp $ */ @@ -41,6 +41,28 @@ #define OS_HANDLE_MAGIC 0x1234abcd #define BCM_MEM_FILENAME_LEN 24 +#ifdef DHD_USE_STATIC_BUF +#define MAX_STATIC_BUF_NUM 16 +#define STATIC_BUF_SIZE (PAGE_SIZE*2) +#define STATIC_BUF_TOTAL_LEN (MAX_STATIC_BUF_NUM*STATIC_BUF_SIZE) +typedef struct bcm_static_buf { + struct semaphore static_sem; + unsigned char *buf_ptr; + unsigned char buf_use[MAX_STATIC_BUF_NUM]; +} bcm_static_buf_t; + +static bcm_static_buf_t *bcm_static_buf = 0; + +#define MAX_STATIC_PKT_NUM 8 +typedef struct bcm_static_pkt { + struct sk_buff *skb_4k[MAX_STATIC_PKT_NUM]; + struct sk_buff *skb_8k[MAX_STATIC_PKT_NUM]; + struct semaphore osl_pkt_sem; + unsigned char pkt_use[MAX_STATIC_PKT_NUM*2]; +} bcm_static_pkt_t; +static bcm_static_pkt_t *bcm_static_skb = 0; + +#endif typedef struct bcm_mem_link { struct bcm_mem_link *prev; struct bcm_mem_link *next; @@ -121,6 +143,7 @@ osl_error(int bcmerror) return linuxbcmerrormap[-bcmerror]; } +void * dhd_os_prealloc(int section, unsigned long size); osl_t * osl_attach(void *pdev, uint bustype, bool pkttag) { @@ -159,6 +182,39 @@ osl_attach(void *pdev, uint bustype, bool pkttag) break; } +#ifdef DHD_USE_STATIC_BUF + + + if (!bcm_static_buf) { + if (!(bcm_static_buf = (bcm_static_buf_t *)dhd_os_prealloc(3, STATIC_BUF_SIZE+ + STATIC_BUF_TOTAL_LEN))) { + printk("can not alloc static buf!\n"); + } + else + printk("alloc static buf at %x!\n", (unsigned int)bcm_static_buf); + + + init_MUTEX(&bcm_static_buf->static_sem); + + + bcm_static_buf->buf_ptr = (unsigned char *)bcm_static_buf + STATIC_BUF_SIZE; + + } + + if (!bcm_static_skb) + { + int i; + void *skb_buff_ptr = 0; + bcm_static_skb = (bcm_static_pkt_t *)((char *)bcm_static_buf + 2048); + skb_buff_ptr = dhd_os_prealloc(4, 0); + + bcopy(skb_buff_ptr, bcm_static_skb, sizeof(struct sk_buff *)*16); + for (i = 0; i < MAX_STATIC_PKT_NUM*2; i++) + bcm_static_skb->pkt_use[i] = 0; + + init_MUTEX(&bcm_static_skb->osl_pkt_sem); + } +#endif return osh; } @@ -168,6 +224,14 @@ osl_detach(osl_t *osh) if (osh == NULL) return; +#ifdef DHD_USE_STATIC_BUF + if (bcm_static_buf) { + bcm_static_buf = 0; + } + if (bcm_static_skb) { + bcm_static_skb = 0; + } +#endif ASSERT(osh->magic == OS_HANDLE_MAGIC); kfree(osh); } @@ -220,6 +284,90 @@ osl_pktfree(osl_t *osh, void *p, bool send) } } +#ifdef DHD_USE_STATIC_BUF +void* +osl_pktget_static(osl_t *osh, uint len) +{ + int i = 0; + struct sk_buff *skb; + + + if (len > (PAGE_SIZE*2)) + { + printk("Do we really need this big skb??\n"); + return osl_pktget(osh, len); + } + + + down(&bcm_static_skb->osl_pkt_sem); + if (len <= PAGE_SIZE) + { + + for (i = 0; i < MAX_STATIC_PKT_NUM; i++) + { + if (bcm_static_skb->pkt_use[i] == 0) + break; + } + + if (i != MAX_STATIC_PKT_NUM) + { + bcm_static_skb->pkt_use[i] = 1; + up(&bcm_static_skb->osl_pkt_sem); + + skb = bcm_static_skb->skb_4k[i]; + skb->tail = skb->data + len; + skb->len = len; + + return skb; + } + } + + + for (i = 0; i < MAX_STATIC_PKT_NUM; i++) + { + if (bcm_static_skb->pkt_use[i+MAX_STATIC_PKT_NUM] == 0) + break; + } + + if (i != MAX_STATIC_PKT_NUM) + { + bcm_static_skb->pkt_use[i+MAX_STATIC_PKT_NUM] = 1; + up(&bcm_static_skb->osl_pkt_sem); + skb = bcm_static_skb->skb_8k[i]; + skb->tail = skb->data + len; + skb->len = len; + + return skb; + } + + + + up(&bcm_static_skb->osl_pkt_sem); + printk("all static pkt in use!\n"); + return osl_pktget(osh, len); +} + + +void +osl_pktfree_static(osl_t *osh, void *p, bool send) +{ + int i; + + for (i = 0; i < MAX_STATIC_PKT_NUM*2; i++) + { + if (p == bcm_static_skb->skb_4k[i]) + { + down(&bcm_static_skb->osl_pkt_sem); + bcm_static_skb->pkt_use[i] = 0; + up(&bcm_static_skb->osl_pkt_sem); + + + return; + } + } + return osl_pktfree(osh, p, send); +} +#endif uint32 osl_pci_read_config(osl_t *osh, uint offset, uint size) { @@ -307,6 +455,40 @@ osl_malloc(osl_t *osh, uint size) if (osh) ASSERT(osh->magic == OS_HANDLE_MAGIC); +#ifdef DHD_USE_STATIC_BUF + if (bcm_static_buf) + { + int i = 0; + if ((size >= PAGE_SIZE)&&(size <= STATIC_BUF_SIZE)) + { + down(&bcm_static_buf->static_sem); + + for (i = 0; i < MAX_STATIC_BUF_NUM; i++) + { + if (bcm_static_buf->buf_use[i] == 0) + break; + } + + if (i == MAX_STATIC_BUF_NUM) + { + up(&bcm_static_buf->static_sem); + printk("all static buff in use!\n"); + goto original; + } + + bcm_static_buf->buf_use[i] = 1; + up(&bcm_static_buf->static_sem); + + bzero(bcm_static_buf->buf_ptr+STATIC_BUF_SIZE*i, size); + if (osh) + osh->malloced += size; + + return ((void *)(bcm_static_buf->buf_ptr+STATIC_BUF_SIZE*i)); + } + } +original: +#endif + if ((addr = kmalloc(size, GFP_ATOMIC)) == NULL) { if (osh) osh->failed++; @@ -321,6 +503,28 @@ osl_malloc(osl_t *osh, uint size) void osl_mfree(osl_t *osh, void *addr, uint size) { +#ifdef DHD_USE_STATIC_BUF + if (bcm_static_buf) + { + if ((addr > (void *)bcm_static_buf) && ((unsigned char *)addr \ + <= ((unsigned char *)bcm_static_buf + STATIC_BUF_TOTAL_LEN))) + { + int buf_idx = 0; + + buf_idx = ((unsigned char *)addr - bcm_static_buf->buf_ptr)/STATIC_BUF_SIZE; + + down(&bcm_static_buf->static_sem); + bcm_static_buf->buf_use[buf_idx] = 0; + up(&bcm_static_buf->static_sem); + + if (osh) { + ASSERT(osh->magic == OS_HANDLE_MAGIC); + osh->malloced -= size; + } + return; + } + } +#endif if (osh) { ASSERT(osh->magic == OS_HANDLE_MAGIC); osh->malloced -= size; |